// 定义一些和权限有关的 Vue指令

// 必须包含列出的所有权限，元素才显示
export const hasPermission = {
  install(Vue) {
    Vue.directive('hasPermission', {
      bind(el, binding, vnode) {
        const permissions = vnode.context.$store.state.account.permissions
        const value = binding.value
        let flag = true
        for (const v of value) {
          if (!permissions.includes(v)) {
            flag = false
          }
        }
        if (!flag) {
          if (!el.parentNode) {
            el.style.display = 'none'
          } else {
            el.parentNode.removeChild(el)
          }
        }
      }
    })
  }
}

// 当不包含列出的权限时，渲染该元素
export const hasNoPermission = {
  install(Vue) {
    Vue.directive('hasNoPermission', {
      bind(el, binding, vnode) {
        const permissions = vnode.context.$store.state.account.permissions
        const value = binding.value
        let flag = true
        for (const v of value) {
          if (permissions.includes(v)) {
            flag = false
          }
        }
        if (!flag) {
          if (!el.parentNode) {
            el.style.display = 'none'
          } else {
            el.parentNode.removeChild(el)
          }
        }
      }
    })
  }
}

// 只要包含列出的任意一个权限，元素就会显示
export const hasAnyPermission = {
  install(Vue) {
    Vue.directive('hasAnyPermission', {
      bind(el, binding, vnode) {
        const permissions = vnode.context.$store.state.account.permissions
        const value = binding.value
        let flag = false
        for (const v of value) {
          if (permissions.includes(v)) {
            flag = true
          }
        }
        if (!flag) {
          if (!el.parentNode) {
            el.style.display = 'none'
          } else {
            el.parentNode.removeChild(el)
          }
        }
      }
    })
  }
}

// 可移动的
export const dialogDrag = {
  install(Vue) {
    Vue.directive('dialogDrag', {
      bind(el, binding, vnode, oldVnode) {
        const dialogHeaderEl = el.querySelector('.el-dialog__header')
        const dragDom = el.querySelector('.el-dialog')
        dialogHeaderEl.style.cursor = 'move'

        // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
        const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null)

        dialogHeaderEl.onmousedown = (e) => {
          // 鼠标按下，计算当前元素距离可视区的距离
          const disX = e.clientX - dialogHeaderEl.offsetLeft
          const disY = e.clientY - dialogHeaderEl.offsetTop

          // 获取到的值带px 正则匹配替换
          let styL, styT

          // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
          if (sty.left.includes('%')) {
            styL = +document.body.clientWidth * (+sty.left.replace(/\%/g, '') / 100)
            styT = +document.body.clientHeight * (+sty.top.replace(/\%/g, '') / 100)
          } else {
            styL = +sty.left.replace(/\px/g, '')
            styT = +sty.top.replace(/\px/g, '')
          }

          document.onmousemove = function(e) {
            // 通过事件委托，计算移动的距离
            const l = e.clientX - disX
            const t = e.clientY - disY

            // 移动当前元素
            dragDom.style.left = `${l + styL}px`
            dragDom.style.top = `${t + styT}px`

            // 将此时的位置传出去
            // binding.value({x:e.pageX,y:e.pageY})
          }

          document.onmouseup = function(e) {
            document.onmousemove = null
            document.onmouseup = null
          }
        }
      }
    })
  }
}
